Physics Quiz: Light and Imaging Concepts

Light produced due to high temperatures, often causing an object to glow.

Reflection of light off a smooth, shiny surface where all light rays have the same angle of reflection.

Reflection of light off a dull or irregular surface where each light ray has a different angle of reflection resulting in a blurry image.

Light produced when an electric current passes through a gas. The gas emits light as it becomes energized.

Absorbing ultraviolet light and releasing it slowly over time, which makes the object glow faintly for a long time.

The change in direction of a light ray at the boundary between two different media caused by a change in the speed of the light ray.

Absorbing ultraviolet light and immediately emitting visible light.

The ratio of the speed of light in a vacuum to the speed of light in a medium. It indicates how much the light slows down when entering a medium.

Light produced as a byproduct of a chemical reaction, usually with little heat released.

A mathematical formula relating the angle of incidence and the angle of refraction, and the refractive indices of the two mediums.

An equation that relates the object distance, image distance and focal length of a lens or mirror.

Light produced by living organisms due to chemical reactions, typically with little heat.

Light generated through friction. Certain crystals emit light when scratched, rubbed, or crushed.

The ratio of the height of the image to the height of the object, indicating the size of the image relative to the object.

A curved mirror that bulges outward, causing light rays to diverge, resulting in a smaller and upright virtual image.

The point at which parallel rays of light converge after passing through a converging lens or reflecting off a concave mirror.

The control center of the cell, containing DNA and controlling cellular activities.

A thin outer layer that protects the cell, controls what enters and exits, and gives the cell its shape.

The gel-like substance inside the cell where most of the cell's activities take place.

A rigid outer layer that provides structural support and protection for plant cells. Made of cellulose.

Organelles in plant cells that capture light energy from the sun to make food (photosynthesis). Contain chlorophyll.

The process where a cell duplicates its DNA and divides into two identical daughter cells.

The phase of the cell cycle where the cell copies its DNA.

The phase of the cell cycle where the copied DNA is divided into two new nuclei, resulting in two daughter cells.

The process of breaking down food manually by using your teeth and chewing.

The process of breaking down food using enzymes and saliva.

Supports the body, protects organs, and makes movement possible.

Tissues that are hard and dense, consisting of bone cells surrounded by a matrix of minerals and collagen fibers.

Tissues that consist of long cells called muscle fibers, responsible for movement.

Connects bone to muscle, allowing for movement.

Connects bone to bone, providing stability and support.

Senses the environment and coordinates an appropriate response.

The law of conservation of mass states that in a closed system the mass of the reactants before a chemical reaction must equal the mass of the products after the reaction. No mass is ever lost or gained during the reaction itself, only changed in form.

The nervous system is the body's communication network, comprised of the central and peripheral systems, responsible for receiving and sending signals and coordinating responses to stimuli.

The central nervous system (CNS) is the control center of the body, comprised of the brain and spinal cord. It receives signals from the peripheral nervous system through the spinal cord and sends signals back out to the body.

The peripheral nervous system (PNS) comprises the nerves that connect the body to the CNS, relaying information about the internal and external environment.

Neurons are specialized cells that make up nervous tissue. They transmit information around the body via electrical signals (nerve impulses) allowing communication between different parts of the body.

Myelin is a fatty material that insulates the axons of neurons, preventing nerve signals from going astray and ensuring efficient signal transmission.

The musculoskeletal system is composed of bones and skeletal muscles, providing support, protection, and allowing movement. It is made up of connective tissues like bones, ligaments, and cartilage.

Osteoporosis is a condition that weakens bones due to loss of bone tissue, making them brittle and prone to fractures. It is often caused by a lack of calcium.

The DNA of a cell determines the type of specialized cell it will become.

Stem cells found in umbilical cord blood after birth can treat certain diseases.

A group of cells working together to perform a specific function.

Different tissues working together to perform a specific function.

A collection of organs working together to perform a function.

Cancer is a disease where cells grow and divide uncontrollably.

Non-cancerous growth where cells stay together.

Cancerous growth where cells spread to other tissues.